Spoil your kitty with scrap wood, (plywood and 2×4’s), and scrap pieces of carpeting. We made a huge Kitty Condo with all scrap materials. These pictures inspired me and I went nuts with the design. Other than the materials above all I needed was wood screws, wood glue, staples, an electric screwdriver and a staple gun. DONE in one afternoon. Cost???? $3.50 USD. To buy one??? Well over $500 for one this large. Go for it and make your kitty feel like a King/Queen. This was a really fun project and someone is no longer scratching the woodwork!